Dusky arion vs Lesser Noctule

Arion subfuscus compared with Nyctalus leisleri

Key Differences

• Dusky arion is Data Deficient while Lesser Noctule is Endangered.

Taxonomic Classification

Rank	Dusky arion	Lesser Noctule
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Stylommatophora (Stylommatophora)	Chiroptera (Bats)
Family	Arionidae	Vespertilionidae
Genus	Arion	Nyctalus
Species	Arion subfuscus	Nyctalus leisleri

Evolutionary Relationship

Dusky arion and Lesser Noctule share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Dusky arion

DD — Data Deficient

Lesser Noctule

EN — Endangered

Physical Characteristics

Attribute	Dusky arion	Lesser Noctule
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dusky arion

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (5 countries) and North America (United States).

Lesser Noctule

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Luxembourg, Sweden, and Ukraine. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Shared Countries

Both species can be found in 2 countries:

🇧🇪 Belgium 🇸🇪 Sweden